EP 3507172 B1 20201125 - AN ACTIVE DRAG-REDUCTION SYSTEM AND A METHOD OF REDUCING DRAG EXPERIENCED BY A VEHICLE
Title (en)
AN ACTIVE DRAG-REDUCTION SYSTEM AND A METHOD OF REDUCING DRAG EXPERIENCED BY A VEHICLE
Title (de)
AKTIVES LUFTWIDERSTANDSMINDERUNGSSYSTEM UND VERFAHREN ZUR MINDERUNG DES VON EINEM FAHRZEUG VERSPÜRTEN LUFTWIDERSTANDES
Title (fr)
SYSTÈME DE RÉDUCTION DE TRAÎNÉE ACTIVE ET PROCÉDÉ DE RÉDUCTION DE TRAÎNÉE SUBIE PAR UN VÉHICULE
Publication
Application
Priority
GB 2016052729 W 20160905
Abstract (en)
[origin: WO2018042143A1] It is desirable to minimise all forms of trailing vortices from a moving vehicle, whether they are from turbulent form drag of a vehicle or from vortex drag. Wingtip vortices on aircraft can persist for relatively long times (of the order of several minutes after the passage of an aircraft) which can cause danger to other aircraft, in particular around airfields where time must be left between subsequent take-offs and/or landings on a given runway for such vortices to dissipate. According to a first aspect of the present invention, there is provided an active drag-reduction system having first (22) and second (24) fluid outlets located on a vehicle (10) adjacent to a low pressure (drag) region (12), wherein fluid ejected from the second fluid outlet (24) is at a higher pressure / ejection velocity than from the first fluid outlet (22). Turbulent and/or low pressure regions adjacent to vehicles are not uniform, but rather have a varying intensity. For instance, the centre of a region may have a lower pressure and/or more turbulent nature than the periphery of the region. In this way, therefore, the present invention allows the system of the present invention to inject relatively higher pressure air (or relatively higher speed air) into the relatively lower pressure / more turbulent part of the low pressure / turbulent region, and relatively lower pressure air (or relatively lower speed air) into the relatively higher pressure / less turbulent part of the low pressure / turbulent region, compared to each other.
IPC 8 full level
B62D 37/02 (2006.01)
CPC (source: CN EP KR US)
B62D 35/007 (2013.01 - KR); B62D 37/02 (2013.01 - CN EP KR US); F15D 1/008 (2013.01 - US); F15D 1/12 (2013.01 - US); Y02T 50/10 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018042143 A1 20180308; AU 2016421471 A1 20190418; AU 2016421471 B2 20220922; CA 3035643 A1 20180308; CA 3035643 C 20220726; CN 109715479 A 20190503; CN 109715479 B 20210820; CN 113401232 A 20210917; CN 113401232 B 20230516; EP 3507172 A1 20190710; EP 3507172 B1 20201125; ES 2857825 T3 20210929; JP 2019526498 A 20190919; JP 6918375 B2 20210811; KR 102589085 B1 20231012; KR 20190044110 A 20190429; US 10919583 B2 20210216; US 2019202505 A1 20190704
DOCDB simple family (application)
GB 2016052729 W 20160905; AU 2016421471 A 20160905; CA 3035643 A 20160905; CN 201680088990 A 20160905; CN 202110909378 A 20160905; EP 16778432 A 20160905; ES 16778432 T 20160905; JP 2019533701 A 20160905; KR 20197009434 A 20160905; US 201916293619 A 20190305